I have just picked up an ax80 from a friend who lost interest in it. I am having a blast with it, but there are about 6 dead keys that I would like to fix. Any information / schematics could really help me out.

The AX80 is no relation to the other AX series. It has only saw cores digitally controlled it appears. haven't seen the schematic but have examined the board. No transistor pairs heat sunk together, no vco chips etc. Just the CEM3372 VCF and an op amp and a couple transistors discrete per channel so not VCO based for sure. (And no auto-tune). The other AX's do have auto-tune because they use the CEM3394 synth on a chip with real VCO inside. Akai confused everyone by starting out with dco's and went to vco's afterward.

I have a VX-90 I was looking for schematics for. It's the rack of the AX-73 that I have on ebay at the moment. Figure I'll get the rack working and I really don't need another big keyboard around. hehe. No sign of manual so far.. if anyone knows drop me a line. -Bob

It is actually working very well, i was just thinking about how easy it would be to add potentiometers for the filter cutoff and resonance, and possibly others. it looks reasonable from the cem3394 datasheet, but i dont want to start hacking away without a schematic.

You cannot post new topics in this forumYou cannot reply to topics in this forumYou cannot edit your posts in this forumYou cannot delete your posts in this forumYou cannot vote in polls in this forumYou cannot attach files in this forumYou can download files in this forum

Please support our site. If you click through and buy from our affiliate partners, we earn a small commission.